For cost-driven applications where full EMI suppression is not mandatory, unshielded inductors provide an attractive power-density-to-cost ratio. They are frequently selected by consumer electronics, battery-powered devices, and compact DC-DC circuits that require high current at a reduced price point.

Open Structure: Cost, Size, and Thermal Advantages

Smaller footprint and lower profile due to open magnetic construction; Reduced material cost for competitive BOM optimization; Efficient heat dissipation and stable current capability

Design Trade-Off & EMI Considerations

Not recommended for noise-sensitive or EMI-regulated systems (ex: automotive control modules, server POL converters). Consider shielded models when required by EMC compliance or switching frequency is high.

Characteristic

Open magnetic flux → compact, lightweight, lower cost
Direct core-electrode path → strong current handling
Simpler structure → robust reliability with fewer failure points

Features

• Ultra-compact footprint and thin profile for high density designs
• Superior heat dissipation compared to fully shielded types
• Cost-efficient design for high-volume consumer electronics
• High saturation current maintained in compact sizes
• Robust reliability with fewer structural failure points

Applications

• Smartphones & tablets (power filtering)
• Consumer DC-DC modules with moderate EMI demand
• Compact, battery-driven power supplies
• Cost-sensitive designs not requiring full EMI shielding